CN211039817U

CN211039817U - Check valve for hydraulic and civil engineering

Info

Publication number: CN211039817U
Application number: CN201921902622.8U
Authority: CN
Inventors: 张洁; 孙钰; 姚湘
Original assignee: Wuxi Taihu University
Current assignee: Wuxi Taihu University
Priority date: 2019-11-06
Filing date: 2019-11-06
Publication date: 2020-07-17
Anticipated expiration: 2029-11-06

Abstract

The utility model discloses a check valve for hydraulic and civil engineering, which comprises a valve body, the valve body is the cavity form, valve body top fixedly connected with water inlet, the outside movable sleeve of water inlet is equipped with the sleeve pipe, the equal level in sleeve pipe both sides is run through and is installed clamp bolt, the activity of valve body bottom has cup jointed out the water end, it is equipped with the internal thread to go out water end internal surface, the valve body surface be equipped with internal thread assorted external screw thread, the inside fixedly connected with filter screen of valve body, the filter screen bottom contacts in a water end inner wall bottom, filter screen top fixedly connected with sleeve, vertical movable sleeve is equipped with the piston rod in the sleeve, sleeve inner wall bottom fixedly connected with reset spring, reset spring top and piston rod bottom fixed connection, the equal fixedly connected with link in piston. The utility model discloses reduce the case and to the striking of valve body, increase of service life, the easy loading and unloading of anticreep can also carry out filtration treatment.

Description

Check valve for hydraulic and civil engineering

Technical Field

The utility model relates to a check valve technical field especially relates to a check valve for hydraulic and civil engineering.

Background

The check valve (also called check valve) is a valve which automatically opens and closes a valve clack depending on the flowing of a medium and is used for preventing the medium from flowing backwards, and is also called a one-way valve, a reverse flow valve and a back pressure valve.

The valve core in the existing check valve has large impact force after resetting, easily damages the inner wall of the valve body, influences the service life and the check effect of the check valve, is troublesome to assemble and disassemble, and is not firm enough to be connected with an external pipeline.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects in the prior art and providing a check valve for hydraulic and civil engineering.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a check valve for water conservancy and civil engineering comprises a valve body, wherein the valve body is hollow, a water inlet is fixedly connected to the top of the valve body, a sleeve is movably sleeved outside the water inlet, compression bolts are horizontally arranged on two sides of the sleeve in a penetrating mode, a water outlet end is movably sleeved at the bottom of the valve body, an internal thread is arranged on the inner surface of the water outlet end, an external thread matched with the internal thread is arranged on the outer surface of the valve body, a filter screen is fixedly connected to the inside of the valve body, the bottom of the filter screen is in contact with the bottom of the inner wall of the water outlet end, a sleeve is fixedly connected to the top of the filter screen, a piston rod is vertically movably sleeved in the sleeve, a reset spring is fixedly connected to the bottom of the inner wall of the sleeve, the, the equal fixedly connected with pull ring in sleeve both sides bottom, around being equipped with the elastic traction rope between pull ring and the ring, the horizontal fixedly connected with case in piston rod top, the recess has been seted up at valve body inner wall top, the inside rubber packing ring that is equipped with case matched with that inlays of recess, the equal fixedly connected with buffering swash plate in the inside top both sides of valve body.

Preferably, the opposite ends of the two compression bolts are fixedly connected with anti-skid pressure plates.

Preferably, the top of the valve core is semicircular.

Preferably, the diameter of the pipe orifice of the water outlet end is larger than that of the pipe orifice of the water inlet.

Preferably, the water inlet both sides equal fixedly connected with slider, the intraductal wall both sides of sleeve are all vertical set up with slider assorted spout.

Preferably, the sleeve is made of a metallic material.

Compared with the prior art, the beneficial effects of the utility model are that:

1. in the utility model, the valve body, the buffer inclined plate, the sleeve, the piston rod, the reset spring, the elastic traction rope and the rubber washer are arranged, so that the impact on the valve body when the valve core is reset can be reduced, and the service life of the valve body is prolonged;

2. in the utility model, by arranging the sleeve, the compression bolt, the water outlet end and the filter screen, the external pipeline can be further reinforced, the passing water flow can be filtered, and the check valve is convenient to assemble and disassemble, thereby being beneficial to the subsequent maintenance;

to sum up, the utility model discloses simple structure reduces the case and to the striking of valve body, increase of service life, and the easy loading and unloading of anticreep can also carry out filtration treatment.

Drawings

Fig. 1 is a schematic structural view of a check valve for hydraulic and civil engineering provided by the present invention;

fig. 2 is the utility model provides a check valve's for hydraulic and civil engineering A department enlargedly.

In the figure: the device comprises a valve body 1, a water inlet 2, a sleeve 3, a compression bolt 4, a water outlet end 5, a filter screen 6, a sleeve 7, a piston rod 8, a return spring 9, a connecting frame 10, a ring 11, a pull ring 12, an elastic traction rope 13, a valve core 14, a groove 15, a rubber gasket 16 and a buffering inclined plate 17.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-2, a check valve for water conservancy and civil engineering comprises a valve body 1, wherein the valve body 1 is hollow, the top of the valve body 1 is fixedly connected with a water inlet 2, the outside of the water inlet 2 is movably sleeved with a sleeve 3, two sides of the sleeve 3 are both horizontally penetrated and provided with a compression bolt 4, the bottom of the valve body 1 is movably sleeved with a water outlet end 5, the inner surface of the water outlet end 5 is provided with internal threads, the outer surface of the valve body 1 is provided with external threads matched with the internal threads, the inside of the valve body 1 is fixedly connected with a filter screen 6, the bottom of the inner wall of the water outlet end 5 is contacted with the bottom of the filter screen 6, the top of the filter screen 6 is fixedly connected with a sleeve 7, the inside of the sleeve 7 is vertically movably sleeved with a piston rod 8, the bottom of the inner wall of, the equal fixedly connected with pull ring 12 in 7 both sides bottoms of sleeve, around being equipped with elastic traction rope 13 between pull ring 12 and the

ring

11, 8 top horizontal fixedly connected with case 14 of piston rod, recess 15 has been seted up at 1 inner wall top of valve body, recess 15 is inside to be inlayed and is equipped with and case 14 matched with rubber packing ring 16, be connected with elastic traction rope 13 between ring 11 and pull ring 12, so the process of restoring to the throne is comparatively mitigateed, and laminate with rubber packing ring 16 after 14 jack-ups of case, can not cause great damage to 1 inner wall of valve body, it is effectual to end, long service life, the equal fixedly connected with buffering swash plate 17 in 1 inside top both sides of valve body.

The equal fixedly connected with antiskid clamp plate of two clamp bolt 4 opposite ends, 14 top semicircular in shape of case, the mouth of pipe diameter that goes out water end 5 is greater than the mouth of pipe diameter of water inlet 2, the equal fixedly connected with slider in water inlet 2 both sides, the equal vertical spout of having seted up with slider assorted in sleeve pipe 3 inner wall both sides, sleeve pipe 3 is made by metal material.

The utility model discloses in, install the check valve on the pipeline earlier, then stir sleeve pipe 3 and screw up clamp bolt 4 and further consolidate its junction, it is firm to connect, it is difficult not hard up, then the rivers can get into valve body 1 through water inlet 2, case 14 is opened under the rivers impact, let the rivers discharge along 1 flow direction outlet end 5 of valve body, treat that water has carried the back, case 14 plugs up 1 water inlet department of valve body under reset spring 9's effort, nevertheless be connected with elastic traction rope 13 between ring 11 and the pull ring 12, so the reset process is comparatively mild, and laminate with rubber packing ring 16 after 14 jack-up of case, can not cause great damage to 1 inner wall of valve body, it is effectual to end contrary, long service life, can directly twist out water end 5 and open the check valve when overhauing and maintaining, loading and unloading are convenient.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The check valve for the water conservancy and civil engineering comprises a valve body (1) and is characterized in that the valve body (1) is hollow, a water inlet (2) is fixedly connected to the top of the valve body (1), a sleeve (3) is sleeved outside the water inlet (2), compression bolts (4) are horizontally arranged on two sides of the sleeve (3) in a penetrating mode, a water outlet end (5) is sleeved at the bottom of the valve body (1) in a movable mode, an internal thread is arranged on the inner surface of the water outlet end (5), an external thread matched with the internal thread is arranged on the outer surface of the valve body (1), a filter screen (6) is fixedly connected to the inside of the valve body (1), the bottom of the filter screen (6) is contacted with the bottom of the inner wall of the water outlet end (5), a sleeve (7) is fixedly connected to the top of the filter, the improved pneumatic control valve is characterized in that a reset spring (9) is fixedly connected to the bottom of the inner wall of the sleeve (7), the top of the reset spring (9) is fixedly connected to the bottom of the piston rod (8), a connecting frame (10) is fixedly connected to the two sides of the piston rod (8), a circular ring (11) is fixedly connected to the bottom of the connecting frame (10), pull rings (12) are fixedly connected to the bottom of the two sides of the sleeve (7), elastic traction ropes (13) are arranged between the pull rings (12) and the circular ring (11), a valve core (14) is horizontally and fixedly connected to the top of the piston rod (8), grooves (15) are formed in the top of the inner wall of the valve body (1), rubber gaskets (16) matched with the valve core (14) are embedded in the grooves (15), and buffer inclined plates (17).

2. The check valve for water conservancy and civil engineering according to claim 1, characterized in that the opposite ends of the two hold-down bolts (4) are fixedly connected with anti-skid press plates.

3. The non-return valve for hydraulic and civil engineering according to claim 1, characterised in that the top of the spool (14) is semicircular.

4. A non-return valve for water conservancy and civil engineering according to claim 1, characterised in that the diameter of the orifice of the outlet end (5) is greater than the diameter of the orifice of the inlet (2).

5. The check valve for water conservancy and civil engineering according to claim 1, characterized in that both sides of the water inlet (2) are fixedly connected with sliding blocks, and both sides of the inner wall of the sleeve (3) are vertically provided with sliding grooves matched with the sliding blocks.

6. A non-return valve for water conservancy and civil engineering according to claim 1, characterised in that the sleeve (3) is made of metal material.